Comparison of Soft Tissue Changes between Adolescents and Adults in Class II Malocclusion Treatment

청소년 및 성인 환자에서 II급 부정교합 치료시 연조직 변화에 관한 비교

  • Chang, Na-Young (Dept. of Orthodontics, School of Dentistry, Wonkwang University) ;
  • Cho, Jin-Hyoung (Dept. of Orthodontics, School of Dentistry, Wonkwang University) ;
  • Lee, You-Mee (Dept. of Oral Medicine, School of Dentistry, Wonkwang University) ;
  • Kang, Kyung-Hwa (Dept. of Orthodontics, School of Dentistry, Wonkwang University)
  • 장나영 (원광대학교 치과대학 치과교정학교실) ;
  • 조진형 (원광대학교 치과대학 치과교정학교실) ;
  • 이유미 (원광대학교 치과대학 구강내과학 교실) ;
  • 강경화 (원광대학교 치과대학 치과교정학교실)
  • Published : 2009.09.30

Abstract

The purpose of this study was to evaluate the soft tissue changes of class II adolescents and adults in respect to extraction or nonextraction. The study included 68 patients from Wonkwang Dental Hospital were categorized to adolescent extraction group, adolescent nonextraction group, adult extraction group, adult nonextraction group. Cephalometric tracing of each patient was done to compare pretreatment and posttreatment of each group, to compare the changes between groups. And among the variables that showed significancy, correlation analysis and simple linear regression were done. The results were as follows. 1. In both adolescents and adults after extraction treatment, nasolabial angle significantly increased and in both subjects after non extraction treatment, nasolabial angle significantly decreased. 2. In extraction subjects, there were positive correlation between the amount of treatment changes of vertical-U1 and E line-upper lip, the changes of vertical-L1 and E line-lower lip, the changes of vertical-L1 and vertical-Li. 3. In extraction subjects, simple regression equations of E line-upper lip, E line-lower lip, Li were calculated by regression analysis. According to the results above, it could be considered that the effect of the extraction or nonextraction treatment was greater than the effect of growth.

본 연구의 목적은 II급 청소년, 성인 환자에서 발치와 비발치 후 연조직 변화를 비교하기 위한 것이었다. 원광대학교 치과병원 교정과에 내원한 환자 68명을 각각 청소년발치군, 청소년비발치군, 성인발치군, 성인비발치군으로 분류하여 치료 전후의 측모 두부방사선사진을 계측하였다. 각 군의 치료 전후를 비교하고 각 군 간의 변화량을 비교하였으며, 그 중 통계적으로 유의한 변수들의 상관성과 회귀분석을 하여 다음과 같은 결과를 얻었다. 청소년과 성인의 발치군에서 비순각은 유의하게 증가하였고 비발치군에서는 유의하게 감소하였다. 발치군에서는 vertical-U1과 E line-upper lip의 변화량 간에, vertical-U1과 E line-lower lip의 변화량 간에, vertical-L1과 vertical-Li의 변화량 간에 양의 상관관계를 보였다. 또한 발치군에서 회귀분석을 통해 E line-upper lip, E line-lower lip, Li에 대한 단순회귀방정식이 도출되었다.

Keywords

References

  1. Tweed CH. Indication for extraction of teeth in orthodontic procedure. Am J Orthod 1944;30:405-428
  2. Baumrind S, Korn EL, Boyd RL, Maxwell R. The decision to extract: Part II Analysis of clinicians' stated reasons for extraction. Am J Orthod Dentofacial Orthop 1996;109:393-402 https://doi.org/10.1016/S0889-5406(96)70121-X
  3. Paquette DE, Beattie JR, Johnston LE. A long-term comparison of nonextraction and premolar extraction edgewise therapy in 'borderline' class II patients. Am J Orthod Dentofacial Orthop 1992;102:1-14 https://doi.org/10.1016/0889-5406(92)70009-Y
  4. Profitt WR, White RP, Sarver DM. Contemporary treatment of Dentofacial Deformity. 2003, Mosby
  5. Bloom LA. Perioral profile changes in orthodontic treatment. Am J Orthod 1961; 47:371 https://doi.org/10.1016/0002-9416(61)90177-4
  6. Anderson JP, Joondeph DR, Turpin DL. A cephalometric study of profile changes in orthodontically treated cases ten years out of retention. Angle orthod 1973;43:324-36
  7. Rudee DA. Proportional profile changes concurrent with orthodontic therapy. Am J Orthod 1964;50:421-434 https://doi.org/10.1016/0002-9416(64)90205-2
  8. Ridel RA. Esthetics and its relation to orthodontic therapy. Angle Orthod 1950;20:168-178
  9. Ricketts RM. Planning treatment on the basis of the facial pattern an estimate of its growth. Angle Orthod 1957;43:14-34
  10. Burstone CJ. Lip posture and its significance in treatment planning. Am J Orthod 1967;53:262-84 https://doi.org/10.1016/0002-9416(67)90022-X
  11. Bishara SE, Cummins DM, Jakobsen JR, Zaher AR. Dentofacial and soft tissue changes in Class II division 1 cases treated with and without extractions. Am J Orthod Dentofacial Orthop 1995;107:28-37 https://doi.org/10.1016/S0889-5406(95)70154-0
  12. Bishara SE, Cummins DM, Jakobsen JR. The morphologic basis for the extraction decision in Class II, Division 1 malocclusions: A comparative study. Am J Orthod Dentofacial Orthop 1995;107:129-35 https://doi.org/10.1016/S0889-5406(95)70127-3
  13. Erdinc AE, Nanda RS, Dandajenz TC. Profile changes of patients treated with and without premolar extractions. Am J Orthod Dentofacial Orthop 2007;132:324-31 https://doi.org/10.1016/j.ajodo.2005.08.045
  14. Janson G, Fuziy A, Freitas MR, Henriques JFC, Almeida RR. Soft-tissue treatment changes in class II division 1 malocclsion with and without extraction of maxillary premolars. Am J Orthod Dentofacial Orthop 2007;132:729.e1-729.e8 https://doi.org/10.1016/j.ajodo.2007.05.012
  15. Kocadereli I. Changes in soft tissue profile after orthodontic treatment with and without extractions. Am J Orthod Dentofacial Orthop 2002;122:67-72 https://doi.org/10.1067/mod.2002.125235
  16. Yu HS, Baik HS. A comparative study of pre-and posttreatment cephalometric measurements: extraction vs. non-extravtion groups of class I malocclusion. Korea J Orthod 1997;27:761-770
  17. Choi JH, Lee JW, Cha KS. Soft tissue profile change prediction in maxillary incisor retraction based on cephalometrics. Korea J Orthod 1997;27:65-78
  18. Ha JK, Cha KS. A cephalometric study on the softtissue profile changes following the incisor retraction. Korea J Orthod 1994;24(3):547-554
  19. Lee SH. Variation of soft tissue profile in adults with treated normal occlusion. 2002; Wonkwang Univ. 20. Jin HK, Moon YS. A study on soft tissue facial profile changes In orthodontic treatment with four premolar extractions. Korea J Orthod 1998;28:1-15
  20. Dahlberg S. Statistical methods for medial and biological students. New York, 1940, Interscience
  21. Ricketts RM. Cephalometric synthesis. Am J Orthod 1960;46:647-73 https://doi.org/10.1016/0002-9416(60)90172-X
  22. Lai J, Ghoush J, Nanda RS. Effects of orthodontic therapy on the facial profile in long and short vertical facial patterns. Am J Orthod Dentofacial Orthop 2000;118: 505-13 https://doi.org/10.1067/mod.2000.110331
  23. Oliver BM. The influence of lip thickness and strain on upper lip response to incisor retraction. Am J Orthod 1982;82:141-9 https://doi.org/10.1016/0002-9416(82)90492-4
  24. Nanda RS, Meng H, Kapila S, Goorhuis J. Growth changes in the soft tissue facial profile. Angle Orthod 1990;60:177-90
  25. Angelle PL. A cephalometric study of the soft tissue changes during and after orthodontic treatment. Trans Eur Orthod Soc 1973;267-80
  26. Koch R, Gonzales A, Witt E. Profile and soft tissue changes concurrent with orthodontic treatment. Eur J Orthod 1979;1:193-9 https://doi.org/10.1093/ejo/1.3.193
  27. Ricketts RM. Esthetics, environment and the law of lip relation. Am J Orthod 1968;54:272-89 https://doi.org/10.1016/S0002-9416(68)90278-9
  28. Subtelny JD. A longitudinal study of soft tissue facial structures and their profile characteristics, defined in relation to underlying skeletal structures. Am J Orthod Dentofacial Orthop 1959;45:481-507 https://doi.org/10.1016/0002-9416(59)90014-4
  29. Subtelny JD. A longitudinal study of soft tissue facial structures and their profile characteristics, defined in relation to underlying skeletal structures. Am J Orthod Dentofacial Orthop 1959;45:481-507 https://doi.org/10.1016/0002-9416(59)90014-4
  30. Mamandras AH. Linear changes of the maxillary and mandibular lips. Am J Orthod Dentofacial Orthop 1988;94:405-10 https://doi.org/10.1016/0889-5406(88)90129-1
  31. Hillesund E, Fjeld D, Zachrisson BU. Reliability of soft-tissue profile in cephalometrics. Am J Orthod 1978;74:537-50 https://doi.org/10.1016/0002-9416(78)90029-5